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Agricultural water-use and costs in California
Highstreet, Allan, (1980)
The California economy, 1947-1980
Arnold, Robert K., (1960)
Conventional and organic-related farming systems research: an assessment of usda and state research projects.
Schaller, F., (1986)
Trends for major California crops : yields, acreages, and production areas
Dean, Gerald W., (1960)
Pōs prepei na organōthē ē egchōrios agora tōn froytōn kai lachanikōn
McCorkle, C. O., (1962)